15465117247 has 2 divisors, whose sum is σ = 15465117248. Its totient is φ = 15465117246.

The previous prime is 15465117211. The next prime is 15465117253. The reversal of 15465117247 is 74271156451.

It is a strong prime.

It is an emirp because it is prime and its reverse (74271156451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15465117247 - 2¹⁹ = 15464592959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15465117257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7732558623 + 7732558624.

It is an arithmetic number, because the mean of its divisors is an integer number (7732558624).

Almost surely, 2^15465117247 is an apocalyptic number.

15465117247 is a deficient number, since it is larger than the sum of its proper divisors (1).

15465117247 is an equidigital number, since it uses as much as digits as its factorization.

15465117247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 235200, while the sum is 43.

The spelling of 15465117247 in words is "fifteen billion, four hundred sixty-five million, one hundred seventeen thousand, two hundred forty-seven".